SEO industry insiders have been trying to understand the relationship between social sharing and SEO for some time now. In early 2011, Rand Fishkin, CEO and co-founder of SEOmoz, tested the relationship between Twitter and Facebook shares and search results in Google. He found a positive correlation between the number of retweets and shares a link received and its search ranking. He found that the more the link was passed around on Twitter and Facebook, the higher the search rank of the page.³